Range of application

Measurement and correction of unbalance of machined turbocharger turbine
rotors. Use of the machine in mid- to high-volume production. Semi automatic unbalance measurement and correction in two planes and with multiple correction steps. Manual loading and unloading.

Design

Two-station machine with measuring and correction station and semi
automatic operating sequence. Vertical balancing unit on a
vibration-optimized machine frame, type-dependent,
exchangeable precision air-bearing support for the turbine rotor, driven by a through a drive-plate with air-jet adapted to the rotor diameter.
Measured data processing by CAB 950 measuring unit.
Correction station with two digitally controlled processing units.

Sequence of operations

Remove the rotor from the measuring station and load into the correction station.

Automatic correction: clamp, index to the correction position of the 1st plane, controlled grinding of a sector. Index to the corretion position of the 2nd plane, repeat the grinding process and unclamp.

Transfer the rotor to the measuring station and start the check run. If the rotor is not in tolerance after the 1st correction step further correction steps can be carried out.

Fully automatic unbalance correction in two planes by grinding. This allows a large amount of
material to be removed in a short time in case of high initial
unbalance.

The air-bearing balancing unit and measuring unit CAB 950 are amongst the most accurate industrial measuring systems currently in the market.